1156864958449 has 16 divisors (see below), whose sum is σ = 1192468816000. Its totient is φ = 1121682836736.

The previous prime is 1156864958441. The next prime is 1156864958479. The reversal of 1156864958449 is 9448594686511.

It is a cyclic number.

It is not a de Polignac number, because 1156864958449 - 2³ = 1156864958441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156864958441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3549067 + ... + 3861295.

It is an arithmetic number, because the mean of its divisors is an integer number (74529301000).

Almost surely, 2^{1156864958449} is an apocalyptic number.

It is an amenable number.

1156864958449 is a deficient number, since it is larger than the sum of its proper divisors (35603857551).

1156864958449 is a wasteful number, since it uses less digits than its factorization.

1156864958449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312904.

The product of its digits is 298598400, while the sum is 70.

The spelling of 1156864958449 in words is "one trillion, one hundred fifty-six billion, eight hundred sixty-four million, nine hundred fifty-eight thousand, four hundred forty-nine".